How to detect tab keystroke in C #?

Question

I want to determine if the tab key is pressed in the text box and focus the next text box on the panel.

I tried the keyPressed and keyDown method. But when I run the program and debug, these methods do not call when the tab key is pressed. Here is my code.

private void textBoxName_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Tab) { textBoxUsername.Focus(); } } private void textBoxName_KeyPress(object sender, KeyPressEventArgs e) { if (e.KeyChar==(char)Keys.Tab) { textBoxUsername.Focus(); } } 

Please correct me. Thanks.

Answer 1

go to text box properties and assign the correct tab index order

Answer 2

Why do you need this complication at all? WinForms does this for you automatically. You just need to set the correct tab order.

Answer 3

Instead, use tabOrder.

Answer 4

You want to leave the event. I just threw this into the default C # WinForms application:

 namespace WindowsFormsApplication1 { public partial class Form1 : Form { /* ... misc housekeeping ... */ private void OnLeave(object sender, EventArgs e) { lblMsg.Text = "left field 1"; } private void OnLeave2(object sender, EventArgs e) { lblMsg.Text = "left field 2"; } } } 

It works as you expected. Obviously, you can do anything you like in the Leave() handler, including forcing focus in another place, but be careful not to confuse the user ...

Answer 5

You can try to override the ProcessCmdKey method like this

Answer 6

If the textBoxName has focus by pressing the TAB key, only the KeyDown event is fired. You just need to set the correct tab order.

Answer 7

If you are dealing with text fields inside a panel, setting the correct tab index should do the job perfectly. But, if you are dealing with a different text field from another panel, say:

panel1 has textbox1

panel2 has a text field2

panel3 has a text field3

Here is what you need to do:

• Set TabStop = False property all text fields. By default, this parameter is set to True.

• Set the correct TabIndex for each panel, e.g.

  panel1 TabIndex = 0; panel2 TabIndex = 1; panel3 TabIndex = 2;

• Then try this code

  private void textBox1_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode.Equals(Keys.Tab)) this.textBox3.Focus(); }